256564

素因数分解:

$2^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1$

素因数の和:53

約数の個数: 48

約数和(自身を含む): 604800

約数和(自身を除く): 348236

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 49, 68, 77, 98, 119, 154, 187, 196, 238, 308, 343, 374, 476, 539, 686, 748, 833, 1078, 1309, 1372, 1666, 2156, 2618, 3332, 3773, 5236, 5831, 7546, 9163, 11662, 15092, 18326, 23324, 36652, 64141, 128282, 256564]

約数ペア:

[(1, 256564), (2, 128282), (4, 64141), (7, 36652), (11, 23324), (14, 18326), (17, 15092), (22, 11662), (28, 9163), (34, 7546), (44, 5831), (49, 5236), (68, 3773), (77, 3332), (98, 2618), (119, 2156), (154, 1666), (187, 1372), (196, 1309), (238, 1078), (308, 833), (343, 748), (374, 686), (476, 539)]